| Summary: | Staff from the Research Aviation Facility of the National Center for Atmospheric Research assess icing on the tail of the National Science Foundation/National Center for Atmospheric Research C-130 aircraft on the tarmac at the Churchill, Manitoba, Canada airport during the Tropospheric Ozone Production about the Spring Equinox (TOPSE) experiment (March 2000). The goal of TOPSE was to investigate the chemical and dynamic evolution of tropospheric chemical composition over mid- to high-latitude continental North America during the winter/spring transition, with particular emphasis on the springtime ozone maximum in the troposphere. Pictured: Pilots Ed Ringleman and Henry Boynton.
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